The back of the birthday card said "7 June 1993", which is when the birthday of Damaris was celebrated. But in fact, this is not her actual birthday: her birthday was celebrated a couple of days too late that year (info obtained via Damaris herself in 2016).
To download the original (cropped) scan in full quality:
Download the file in .TIFF format (cf. also "Download options").
With thankful credit to Damaris Cerdas (a Costa Rican citizen who photographed and annotated her volunteering experience to the Solomon Islands in 1993) for having given me permission to digitize her photo album (August 2016) and publish 98% of it under a Creative Commons BY-SA 4.0 license, which I have done here.